/*
 * FreeModbus Libary: A portable Modbus implementation for Modbus ASCII/RTU.
 * Copyright (c) 2006 Christian Walter <wolti@sil.at>
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * File: $Id: mbfuncother.c,v 1.8 2006/12/07 22:10:34 wolti Exp $
 */

/* ----------------------- System includes ----------------------------------*/
#include "stdlib.h"
#include "string.h"

/* ----------------------- Platform includes --------------------------------*/
#include "port.h"

/* ----------------------- Modbus includes ----------------------------------*/
#include "mb.h"
#include "mbframe.h"
#include "mbproto.h"
#include "mbconfig.h"

#if MB_FUNC_OTHER_REP_SLAVEID_ENABLED > 0

/* ----------------------- Static variables ---------------------------------*/
static UCHAR    ucMBSlaveID[MB_FUNC_OTHER_REP_SLAVEID_BUF];
static USHORT   usMBSlaveIDLen;

/* ----------------------- Start implementation -----------------------------*/

eMBErrorCode
eMBSetSlaveID(UCHAR ucSlaveID, BOOL xIsRunning,
              UCHAR const* pucAdditional, USHORT usAdditionalLen)
{
	eMBErrorCode    eStatus = MB_ENOERR;

	/* the first byte and second byte in the buffer is reserved for
	 * the parameter ucSlaveID and the running flag. The rest of
	 * the buffer is available for additional data. */
	if(usAdditionalLen + 2 < MB_FUNC_OTHER_REP_SLAVEID_BUF) {
		usMBSlaveIDLen = 0;
		ucMBSlaveID[usMBSlaveIDLen++] = ucSlaveID;
		ucMBSlaveID[usMBSlaveIDLen++] = (UCHAR)(xIsRunning ? 0xFF : 0x00);

		if(usAdditionalLen > 0) {
			memcpy(&ucMBSlaveID[usMBSlaveIDLen], pucAdditional,
			       (size_t)usAdditionalLen);
			usMBSlaveIDLen += usAdditionalLen;
		}
	} else {
		eStatus = MB_ENORES;
	}

	return eStatus;
}

eMBException
eMBFuncReportSlaveID(UCHAR* pucFrame, USHORT* usLen)
{
	memcpy(&pucFrame[MB_PDU_DATA_OFF], &ucMBSlaveID[0], (size_t)usMBSlaveIDLen);
	*usLen = (USHORT)(MB_PDU_DATA_OFF + usMBSlaveIDLen);
	return MB_EX_NONE;
}

#endif
